removed dupe entry for billing

Author: bandersmsft

.openpublishing.redirection.json

@@ -27721,11 +27721,6 @@
       "redirect_url": "https://docs.microsoft.com/rest/api/billing/enterprise/billing-enterprise-api-usage-detail",
       "redirect_document_id": true
     },
-    {
-      "source_path": "articles/billing/billing-understand-free-service-meter-mapping.md",
-      "redirect_url": "/azure/billing/billing-check-free-service-usage",
-      "redirect_document_id": true
-    },
     {
       "source_path": "articles/active-directory-domain-services/active-directory-ds-azure-portal-enable-preview-access.md",
       "redirect_url": "/azure/active-directory-domain-services/active-directory-ds-contact-us",
@@ -45715,11 +45710,6 @@
       "redirect_url": "/azure/cost-management-billing/understand/review-partner-agreement-bill",
       "redirect_document_id": false
     },
-    {
-      "source_path": "articles/billing/billing-understand-free-service-meter-mapping.md",
-      "redirect_url": "/azure/cost-management-billing/manage/check-free-service-usage",
-      "redirect_document_id": false
-    },
     {
       "source_path": "articles/cost-management/azure-vm-extended-metrics.md",
       "redirect_url": "/azure/cost-management-billing/cloudyn/azure-vm-extended-metrics",